UDIRC SIERRA PRO UD1203PRO 1/12 4WD Brushless RTR RC Trophy Truck

Brushless4WD50+ MPHRTRCenter Differential2S/3S Compatible60A ESC
Sale price$319.99 USDRegular price $369.99 USD

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Bundle: Vehicle + 1x 3S LiPo Battery
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UDIRC SIERRA PRO UD1203PRO 1/12 4WD Brushless RTR RC Trophy Truck

UDIRC SIERRA PRO UD1203PRO 1/12 4WD Brushless RTR RC Trophy Truck

Sale price$319.99 USDRegular price $369.99 USD

Vehicle + 1x 3S LiPo Battery

Built-in Gyro for Stable & Easy Control

The integrated gyro stabilization system helps keep the truck steady at high speeds. It automatically corrects direction, making it easier to control and reducing the chance of losing control—perfect for beginners.

✅ With Gyro

❌ Without Gyro

Quick-Release Upper Deck for Easy Maintenance

The quick-release upper deck design allows fast access to internal components without complicated disassembly. It makes maintenance, repairs, and upgrades easier and more efficient, so you can spend more time driving and less time fixing.

Quick-Release Differential Covers for Easy Access

The front and rear differential covers feature a quick-release design, allowing fast access without complex disassembly. Easily inspect, maintain, or service the differentials in minutes.

Adjustable RC Battery Compartment for Multiple Battery Sizes

This RC truck features an adjustable battery compartment (115 × 38 × 25 mm), providing compatibility with various battery sizes for improved flexibility and usability.

Flexible Front Mudguards for Enhanced Protection

The front mudguards are made from durable TPU material and securely mounted with screws for a stable fit. Their flexible design helps deflect dirt, debris, and small stones, protecting key front components during high-speed off-road driving.

Rear TPU Mudguards for Added Durability

The rear mudguards feature a flexible TPU construction with secure screw mounting, providing reliable protection against dirt and debris. They help keep the drivetrain cleaner and improve durability during rough terrain driving.

Quick-Release RC Car Body Shell for Easy Access

This RC truck features a quick-release PC body shell with front and rear clips, allowing fast removal without tools for improved convenience and usability.

Hall Sensor Transmitter for Smooth & Drift-Free Control

The Hall sensor transmitter provides contactless operation for ultra-smooth control and precise centering. It eliminates drift and delivers a more accurate and responsive driving experience.

Dual Power Options for Greater Flexibility

The transmitter supports a removable AA battery tray or a 2S LiPo battery (up to 65 × 35 × 15 mm), allowing you to choose the most convenient power option.

Multi-Color LED Light Bar with Multiple Modes

Product details

Vehicle SPECS

Component details

Vehicle Name:
SIERRA PRO
Vehicle Model :
UD1203PRO
Vehicle Scale:
1/12
Vehicle Type:
Short-Course Truck
Vehicle Suspension:
Independent Suspension
Vehicle Size:
L375×W198×H139mm
Vehicle Front wheel track:
165mm
Vehicle Rear wheel track:
165mm
Vehicle Wheelbase:
228mm
Vehicle Ground clearance:
about 30mm
Vehicle Power type:
Electric
Vehicle Speed:
50-80km/h
Vehicle Transmission mode:
Spindle transmission
Vehicle Differential:
Metal Differential
Vehicle Drive system:
4 wheel drive
Vehicle Drive type:
Adjustable
Vehicle Tire diameter:
ø73.3×30.5mm
Vehicle Wheel adapters:
11.97mm, metal
Vehicle Body:
PC
Vehicle Battery compartment capacity:
L115×W38×H25mm x2
Vehicle Main spur gear:
1m, 10T
Vehicle Bevel gear:
0.8m
Vehicle Servo:
3-line, 17g copper gear digital servo
Vehicle Car lights:
Included
MOTOR SPECS

Component details

Motor Model: 
BL2845-47
Motor Type:
Brushless motor
Motor Weight:
About 128g
Motor Size:
2845-4700KV
Motor Rated voltage:
7.4-11.1V DC
Motor Output shaft:
ø3.175mm
Motor Connector Type:
3.5mm banana head
Motor Limit:
2-3S LiPo
ESC SPECS

Component details

ESC Model:
ESC60
ESC RF Standard:
2.4GHz
ESC Input Power:
2-3S
ESC Rated current:
60A
Power Connector:
XT60
Transmitter

Component details

Transmitter Model:
UA42-E01
Transmitter Control Type:
Proportional
Transmitter Frequency Band:
2.4GHz
Transmitter Control Distance:
About 100m
Transmitter Channels:
4
Transmitter Iput Power Method 1:
1.5V AA Battery x 4pcs
Transmitter Iput Power Method 2:
7.4V Battery with connector type XH2.54-3P
Receiver

Component details

Receiver Model:
SR6
Receiver RF Standard:
2.4GHz
Receiver Input Voltage:
3.6-12V DC
Receiver Size:
32×15×20mm
Manuals & Downloads

Customers praised this 1/12 scale RC trophy truck as "the best small scale SC on the market," highlighting exceptional durability, speed, and performance. The brushless motor, center differential, and gyro deliver impressive power and control. Reviewers noted "tough as nails" construction and excellent value. Minor concerns include remote control quality and brake sensitivity.

  • The best small scale SC on the market! Price/performance/durability and lowest spare part price!
  • Tough as nails. I've never pushed a car so hard and had it come out unscathed.
  • Punches well above its weight class. Scale realism and robust, high-speed performance.
Scale (positive)Service (positive)Durability (positive)Price (positive)Truck (positive)
  • 5 stars: 21 (95%)
  • 4 stars: 1 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
n
noah c (United States)
Vehicle + 1x 3S LiPo Battery
How easy is it to control and handle?:
1
5
How satisfied are you with its overall performance?:
1
5
What experience level is this product best suited for?: First-Time User
This is a bad ass little truck ! I’ve been smashing the forest floor with little racer

This is a bad ass little truck ! I’ve been smashing the forest floor with little racer .. built extremely well , takes a beating and keeps going .. shipping was fast and customer service is fantastic.. one thing I wish they would do is offer upgraded parts .

M
Mark Appleby (United Kingdom)
Vehicle + 1x 3S LiPo Battery
Absolutely amazing rc car i most say its

Absolutely amazing rc car i most say its udirc best on the market I love it fast shipping and delivery 😍

C
Cory Gore-Salazar (United States)
Vehicle + 1x 3S LiPo Battery
FIRE RHINO FOR THE W!!!

Absolutely a beast of a trophy truck!!! It’s so much fun right out of the box and very durable. The UDIRC team really nailed this one. All the power you could need and looks amazing.

L
Lawrence Walsh (United States)
Small Package Huge Performance

This is a great rc the center diff which is rare in a smaller size vehicle makes all the difference in performance. Small package huge performance you have a brushless motor paired to a strong esc with overall a nicely built durable rc and really cool lighting system as well I really enjoy this rc a lot.

T
Trevor Farley (United Kingdom)
Vehicle Only – No Battery
CHECK OUT FARCYDERC FOR MY REVIEW

https://youtu.be/ICdezuuaGQA?is=3fFDxwXuTi6ItivF

P
Pertsa Pertsa (Finland)
Vehicle Only – No Battery
Small truck, huge heart, awesome!

Handy size, small enough but drives like a bigger truck, very fast, very durable! Check out the full review here: https://youtu.be/8fZ1Nfsvwao

U
Usman Sheikh (United States)
Vehicle Only – No Battery
i have been nothing but bash and blast with this truck and has been fantastic

i have been nothing but bash and blast with this truck and has been fantastic. I did break a front lower control arm today and thanks a MILLION for providing replacements arms. that was an absolute lifesaver.

D
Dunorbug (United States)
My honest opinion

Every day when I get home, my buddy and I immediately grab this little truck.

We've got three 3s-2200 mAh batteries, and we absolutely tear this thing up across all sorts of terrain. We jump it high, low, and far, constantly smashing into stuff. He loves trying to catch it, and when he does, he grabs it with his teeth and flips it all over the place. This thing is seriously durable. I used to have the 1610S Pro, which was awesome too, until I got the 1203 Pro, and we did the exact same stuff with that one!

I had some trouble getting my programming card to work, so I reached out to customer support. They got back to me super fast, communicated really well, and totally stood by their product. I was blown away by that. You can have the best product ever, but if the customer support isn't there to back it up, it's useless to me.

I'm especially impressed with the gyroscope; it lets us pull off quick moves without losing control. I thought we might have issues with the fans or steering, but they're both working perfectly even after a ton of use. I'm pretty new to the RC hobby, and in the short time I've been into it, I feel like when you spend hundreds of dollars on something, it should just work right, and you shouldn't have to upgrade or buy new parts so quickly. I've had great luck with these UDI RC rigs and I'll keep supporting them and buying their stuff.

M
Michael Nichols (United States)
Vehicle Only – No Battery
The best 1/12 short course RC I've ever run.

Okay, guys, I have a YouTube channel. And I run lots of different RC cars and for a smaller short course truck. This is, by far the best one. I've run. Great performance very durable. It feels like a high-end RC car, it drives and handles like a bigger RC car. This is my honest opinion.
I highly recommend it 100%

P
Poor Boys RC (Canada)
10/10 Excellent!

Undoubtedly, one of the best (if not the best) under 1/10 scale SCT on the market today. Looks awesome, performance is great, and it's tough as nails. I've never pushed a car so hard and had it come out unscathed.

https://youtu.be/lV6wdnPAZH0

H
Hayden Bond
Vehicle + 1x 3S LiPo Battery
How easy is it to control and handle?:
1
5
How satisfied are you with its overall performance?:
1
5
What experience level is this product best suited for?: First-Time User
The absolute greatest cheap rc truck got it with

The absolute greatest cheap rc truck got it with the 3s and it absolutely hauls all sorts of a*s and is durable I’ve sent it to the moon multiple times only problem is the battery coming undone which caused one to get launched but that’s my own fault launching them

G
Gary A Hart (United States)
Vehicle + 1x 3S LiPo Battery
How easy is it to control and handle?:
1
5
How satisfied are you with its overall performance?:
1
5
What experience level is this product best suited for?: Intermediate
Awesome truck

For the price this truck has everything you need and more super fast and very well made

R
Roberto Villalobos (United States)
Vehicle + 1x 3S LiPo Battery
Never received it

Never received it, but the company did make good for it. They are a great company to do business with.

G
Grabiel Perez (Puerto Rico)
Vehicle + 1x 3S LiPo Battery
Best SCT at this scale period.

The UDIRC UD1203PRO punches well above its weight class. It successfully delivers the scale realism and robust, high-speed performance of a premium trophy truck at a highly competitive price point. For enthusiasts looking for a highly durable, 3S-ready small-scale basher, this truck is an absolute home run.

M
Marc Reymond (France)
Vehicle Only – No Battery
the best small scale sc on the market !

the best small scale sc on the market ! price/performance/durability and with the lowest spare part price I LOOOVE IT !!

A
Anonymous (United Kingdom)
Vehicle Only – No Battery
Great fun

Great fun for a little SCT… fast and great looking

D
D.B. (United States)
Vehicle + 1x 3S LiPo Battery
Awesome Little Ripper! One of my favorites.

The UDIRC UD1203 Pro is a phenomenal little truck! Love the Scale size, handling and looks of this super nice vehicle.

A
Anonymous (Germany)
The truck is really great and of excellent quality

The truck is really great and of excellent quality. Unfortunately, the remote control is absolute rubbish. The steering wheel is too loose and has too little travel. I hope UDIRC will release a different remote control for this truck.

B
Brett Allen (United States)
Absolutely love this truck! So fast out of the

Absolutely love this truck! So fast out of the box and I might be the most durable RC!

A
Anonymous (United Kingdom)
Awesome RC

Fast, durable and well rounded control ! 👍🏼

Reviewer avatar
Pete Nova (United States)
Premium Brands Watch Out!

UDIRC absolutely knocked it out of the park with this 1/12 short course truck! If you’re a fan of the ARRMA Mojave Grom but wanted something in a bigger size, here it is! This truck is extremely powerful, but the center differential and gyro really help with power delivery and control. The suspension is dialed for short course truck like performance. It’s also super tough, and they even include spare control arms, although I haven’t broken one yet.

J
Johnny Crash
We're recording content for this truck as im typing this

We're recording content for this truck as im typing this. I'm impressed by it, and would like to see UDIRC continue in this direction. One change I'd make would be softer brakes, otherwise fantastic truck!